Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
  • C09B31/02—Disazo dyes
  • C09B31/06—Disazo dyes from a coupling component "C" containing a directive hydroxyl group
  • C09B31/068—Naphthols
  • C09B31/072—Naphthols containing acid groups, e.g. —CO2H, —SO3H, —PO3H2, —OSO3H, —OPO2H2; Salts thereof
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
  • C09B31/02—Disazo dyes
  • C09B31/06—Disazo dyes from a coupling component "C" containing a directive hydroxyl group
  • C09B31/068—Naphthols

Definitions

• the present invention relates to new azo dyes, processes for their preparation and use of these dyes for dyeing and printing fiber materials, in particular textile fiber materials.
• the present invention relates to azo dyes of the formula wherein A and B are independently optionally substituted phenyl or naphthyl and X is -N (R1) -SO2-, -O-SO2- or -SO2-N (R1) -, wherein R1 is hydrogen or C1-C8-alkyl.
• the substituents of the radicals A and B are, for example, alkyl groups with 1 to 8, preferably 1 to 4, carbon atoms, such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, hexyl, independently of one another , Heptyl, octyl, alkoxy groups with 1 to 8 carbon atoms, in particular 1 to 4 carbon atoms, such as methoxy, ethoxy, propoxy, isopropoxy, butoxy, acylamino groups such as alkanoylamino groups with 2 to 8 carbon atoms and alkoxycarbonylamino groups with 2 to 8 carbon atoms, such as acetylamino, Propionylamino, methoxycarbonylamino, ethoxycarbonylamino, alkanoyl groups with 2 to 8, preferably 2 to 4 carbon atoms, such as
• C1-C8 alkyl for R1 in formula (1) e.g. Methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, hexyl, heptyl or octyl.
• azo dyes of the formula (1) in which R1 is hydrogen or C1-C4alkyl, in particular methyl.
• azo dyes of the formula (1) in which A and B independently of one another are optionally substituted by C1-C8-alkyl, C1-C8-alkoxy, halogen, carboxy, sulfo, phenylaminosulfonyl or naphthylaminosulfonyl, phenyl or naphthyl, the phenylaminosulfonyl and the naphthylaminosulfonyl radical may be further substituted by C1-C8-alkyl, C1-C8-alkoxy, halogen, carboxy or sulfo, preferably sulfo, in particular in which A and B are optionally optionally independent of one another by C1-C8-alkyl, C1-C8-alkoxy, halogen , Carboxy or sulfo substituted phenyl or naphthyl.
• azo dyes of the formula (1) in which A is phenyl optionally substituted by C1-C4-alkyl, C1-C4-alkoxy, halogen, carboxy, sulfo, phenylaminosulfonyl or naphthylaminosulfonyl, the phenylaminosulfonyl and naphthylaminosulfonyl radical being by C1-C8 -Alkyl, C1-C8 alkoxy, halogen, carboxy or sulfo may be further substituted.
• azo dyes of the formula (1) in which B is phenyl optionally substituted by C1-C4-alkyl, C1-C4-alkoxy, halogen, carboxy or sulfo.
• A is optionally substituted by C1-C4-alkyl, C1-C4-alkoxy, halogen, carboxy, sulfo, phenylaminosulfonyl or naphthylaminosulfonyl, the phenylaminosulfonyl and naphthylaminosulfonyl radicals by C1-C8-alkyl , C1-C8-alkoxy, halogen, carboxy or sulfo may be further substituted, and B optionally substituted by C1-C4-alkyl, C1-C4-alkoxy, halogen, carboxy or sulfo.
• the azo dyes of the formula (1) preferably contain only one or two sulfo groups, in particular only one sulfo group.
• azo dyes of the formula (1) in which X is -N (R1) -SO2-, -O-SO2- or -SO2-NH-, preferably in which X is -N (R1) -SO2- and R1 is hydrogen or C1 -C4 alkyl, especially hydrogen.
• azo dyes of the formula (1) in which A and B independently of one another optionally substituted by C1-C4-alkyl, C1-C4-alkoxy, halogen, carboxy or sulfo-substituted phenyl or naphthyl, X -N (R1) -SO2- and R1 is hydrogen or C1-C4-alkyl, especially hydrogen, and the azo dyes of the formula (1) contain only one or two sulfo groups, in particular only one sulfo group.
• Azo dyes of the formula are particularly preferred wherein R1 is hydrogen or C1-C4-alkyl, in particular hydrogen, R2 C1-C4-alkyl, C1-C4-alkoxy, halogen, carboxy or optionally substituted by sulfo phenylaminosulfonyl or naphthylaminosulfonyl, R3 C1-C4-alkyl, C1-C4-alkoxy , Halogen or carboxy and n denotes the number 1 or 2.
• Azo dyes of the formula are very particularly preferred wherein R4 is hydrogen or methyl, especially hydrogen.
• the invention further relates to dye mixtures which contain at least two azo dyes of the formula (1), the meanings and preferences given above applying to the azo dyes of the formula (1).
• the invention further relates to a process for the preparation of the azo dyes of the formula (1), which is characterized in that an amine of the formula A - X - B - NH2 (4), wherein A, B and X have the meanings given under formula (1), diazotized and on a compound of formula wherein R5 is hydrogen or -CH2-SO3H, couples, and the product thus obtained, if R5 is -CH2SO3H, for the compound of formula reacted, the compound of formula (6) diazotized and on a compound of formula couples.
• Mixtures of the dyes of the formula (1) can be prepared, for example, by mixed synthesis, following the procedure given above, but using at least two compounds of the formula (4).
• the compounds of the formulas (4) and (6) are each diazotized in a manner known per se, e.g. with a nitrite, e.g. with an alkali metal nitrite such as sodium nitrite in a mineral acid medium, e.g. in a hydrochloric acid medium, at temperatures of, for example, -5 to 30 ° C and preferably at 0 to 10 ° C.
• the coupling to the coupling components of the formulas (5) and (7) takes place in a manner known per se, at acidic, neutral to alkaline pH values and temperatures of, for example, -5 to 30 ° C., preferably 0 to 15 ° C.
• reaction of the reaction product obtained from the coupling of the compound of formula (4) with the compound of formula (5) to the compound of formula (6) is only necessary if a compound of formula (5) is used, wherein R5 -CH2 -SO3H is.
• the reaction takes place in the presence of a base, e.g. Sodium hydroxide, at a temperature of, for example, 40 to 100 ° C, in particular at a temperature of 80 to 100 ° C.
• the substituent R 1 as alkyl can also be introduced after the preparation of the dye of formula (1), e.g. by alkylation with dialkyl sulfate, dialkyl carbonate, dialkyl methane phosphonate or toluenesulfonic acid ester methyl derivatives, in aqueous solution according to a procedure known per se.
• dyes of the formula (1) in which X is -N (R1) -SO2-, are prepared by reacting a compound of the formula with a halogenating agent to a compound of the formula and then reacting the compound of formula (9) with a compound of formula AN (R1) H (10), wherein A, B and R1 have the meanings given under formula (1) and Hal is halogen, in particular chlorine.
• reaction of the compound of formula (8) to the compound of formula (9) with a halogenating agent takes place in an organic solvent, e.g. Sulfolane, dimethyl sulfoxide or dimethylformamide, in a manner known per se.
• a halogenating agent e.g. with thionyl chloride or sulfuryl chloride
• organic solvent e.g. Sulfolane, dimethyl sulfoxide or dimethylformamide
• a and B in the compound of the formula (4) are preferably phenyl optionally substituted by C1-C4-alkyl, C1-C4-alkoxy, halogen, carboxy or sulfo, in particular by methyl, methoxy, chlorine, carboxy or sulfo.
• An interesting embodiment of the process according to the invention is characterized in that a compound of the formula (4) in which A and B independently of one another are optionally substituted by C1-C4-alkyl, C1-C4-alkoxy, halogen, carboxy or sulfo, phenyl or naphthyl, X is -N (R1) -SO2- and R1 is hydrogen or C1-C4-alkyl, especially hydrogen, and the compound of formula (4) contains only one or two sulfo groups, especially only one sulfo group, on a compound of formula (5), wherein R5 is -CH2-SO3H, couples.
• a particularly preferred embodiment of the process according to the invention is characterized in that a compound of the formula wherein R1, R2, R3 and n have the meanings given under formula (2), on a compound of formula couples.
• a very particularly preferred embodiment of the process according to the invention is characterized in that a compound of the formula wherein R4 has the meanings given under formula (3), couples to a compound of formula (12).
• the amines of the formula (4) and the compounds of the formula (5) are known per se or can be prepared analogously to known compounds.
• the dyes of the formula (1) are either in the form of their free acid or, preferably, as their salts.
• Suitable salts are the alkali metal or ammonium salts or the salts of an organic amine.
• Examples include the sodium, lithium, potassium or ammonium salts or the salt of mono-, di- or triethanolamine.
• the azo dyes of the formula (1) according to the invention are suitable for dyeing and printing according to methods known per se, in particular of nitrogen-containing or hydroxyl-containing fiber materials, paper or leather, such as e.g. textile fiber materials made of cellulose, silk and in particular wool and synthetic polyamides.
• the azo dyes of the formula (1) according to the invention can be used in a customary, optionally previously prepared form for dyeing or printing. This gives level dyeings in red tones with good general fastness properties, in particular good fastness to rubbing, wet, wet rubbing and light.
• the dyes according to the invention are very readily water-soluble.
• the dyes according to the invention have a very good build-up capacity and can be combined very well with other dyes.
• the above-mentioned textile material can be in a wide variety of processing forms, e.g. as fiber, yarn, woven or knitted fabric.
• parts represent parts by weight.
• the temperatures are degrees Celsius.
• the relationship between parts by weight and parts by volume is the same as that between grams and cubic centimeters.
• Example 1 In a first step, a mixture of 41 parts of a 41% aqueous sodium bisulfite solution and 13 parts of a 37% aqueous formaldehyde solution is prepared, which is then stirred for a short time and at 65 ° with 13.95 parts Aniline is added. A clear solution slowly forms, which solidifies in crystalline form after 2 hours on cooling. Then the reaction mixture is diluted with 140 parts of water, warmed to 60 ° and stirred until a clear solution is obtained. The mixture is cooled to 5 ° by adding ice. 16.8 parts of sodium hydrogen carbonate are then added.
• a compound in the form of the free acid of the formula corresponds, dissolved in 150 parts of water with concentrated aqueous sodium hydroxide solution at pH 7.5 and then mixed with 37.5 parts of a 4-normal sodium nitrite solution.
• the reaction mixture is added dropwise to a mixture of 150 parts of ice and 37.5 parts of an approximately 32% hydrochloric acid solution.
• the diazo suspension thus obtained is added to the solution obtained in the first step.
• 190 parts of sodium chloride are added and the reaction product is then filtered off. 180 parts of a still moist reaction product are obtained, in the form of the free acid of the compound of the formula corresponds.
• the solution presented is previously prepared by dissolving 1.44 parts of 2-naphthol in 100 parts of warm water, with the addition of 5 parts of 2 normal aqueous sodium hydroxide solution and 1.06 parts of sodium carbonate, and then cooling to a temperature of 2 ° .
• 18 parts of sodium chloride are added to the reaction mixture thus obtained, the precipitated dye is filtered off, washed with dilute aqueous sodium chloride solution and ice water and dried in vacuo at a temperature of 50 to 60 °. This gives 3.8 parts of a dye which is in the form of the free acid of the compound of the formula corresponds.
• the dye of formula (104) colors natural and synthetic polyamide in red shades.
• 10 parts of polyamide 6.6 fabric are dyed in 500 parts of an aqueous liquor which contains 2 g / l of ammonium acetate and is adjusted to pH 5 with acetic acid.
• the proportion of the dye according to Example 1 is 0.7% based on the fiber weight.
• the dyeing time at a temperature of 98 ° is 30 to 90 minutes.
• the dyed polyamide 6.6 fabric is then removed and washed and dried as usual.
• a red-dyed polyamide 6.6 fabric is obtained which has a pure shade and good overall fastness properties.
• 10 parts of polyamide 6.6 fabric are dyed in 500 parts of an aqueous liquor which contains 1 g / l of monosodium phosphate and is adjusted to pH 6 with disodium phosphate.
• the proportion of the dye according to Example 3 is 1%, based on the fiber weight.
• the dyeing time at a temperature of 98 ° is 30 to 90 minutes.
• the dyed polyamide 6.6 fabric is then removed and washed and as usual dried.
• a red-dyed polyamide 6.6 fabric is obtained which has a pure shade and good overall fastness properties.
• 100 parts of suede clothing are rolled on at 50 ° in a solution of 1000 parts of water and 2 parts of 24% ammonia for 2 hours and then at 60 ° in a solution of 1000 parts of water, 2 parts of 24% ammonia and 3 parts of dye dyed according to Example 1 for 1 hour. Then a solution of 40 parts of water and 4 parts of 85% formic acid is added and the dyeing is continued for a further 30 minutes.
• the leather is then rinsed well and, if necessary, treated with 2 parts of a dicyandiamide-formaldehyde condensation product for 30 minutes at 50 °. A red color with good fastness properties is obtained.
• the printed goods are dried in a drying cabinet at 70 to 80 ° and then steamed for 20 to 30 minutes with saturated steam at 101 to 103 °.
• the goods are then rinsed cold for 10 minutes, washed with 2 g / l of a synthetic detergent at 50 to 60 ° for 15 minutes, rinsed again cold and then dried. You get a uniform print in a red shade, with sharp contours and good fastness properties.
• the printing paste is applied in a diluted form.
• the printed material proves to be speckle-free.

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Coloring (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Medicinal Preparation (AREA)
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• 1991
  • 1991-05-06 AR AR91319698A patent/AR244752A1/es active
  • 1991-05-08 DE DE59105764T patent/DE59105764D1/de not_active Expired - Fee Related
  • 1991-05-08 EP EP91810357A patent/EP0457729B1/fr not_active Expired - Lifetime
  • 1991-05-08 ES ES91810357T patent/ES2074250T3/es not_active Expired - Lifetime
  • 1991-05-16 KR KR1019910007919A patent/KR0168675B1/ko not_active Expired - Fee Related
  • 1991-05-17 BR BR919102042A patent/BR9102042A/pt not_active IP Right Cessation
  • 1991-05-17 JP JP3112705A patent/JP2927568B2/ja not_active Expired - Lifetime

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